Side bearing for cars.



J. E. NORWOODM SIDE BELING FOB om.

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lcaslngs or frames o vto that shown in the United States Letters JoriN E. Nonwoon, or BALTIMORE, MARYL AND, ASSIGNOR To THE T.y n. sYMINGToN COMPANY, or BALTIMQRE, MARYLAND. i y

. snm BEARING rca cans.

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To all whom it may concern:

Be it known thatl, JOHN E. NoRwooD, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Im ,rovements in Side Bearings for Cars; an I do hereby declare the following toghe,` a full, clear, andl exact description of the invention, such as will enable others `skilled in the art to which it appertains to make and use the same.

This invention relates to bearings for cars and more particularly' to ball bearings as employed at the sides of car trucks. As this class of bearings are ordinarily constructed, race plates are employed for direct engagement by the anti-friction devices, the race plates being of tem ered steel and heldin fp malleable iron.

A The object of the present invention is to provide a composite. bearing member including a base vor frame, a race' plate and ready means for securing the plate in the base or frame, wherein two opposed bearing members will have their race plates, in proper relation to each other, that 1s in parallelism, Without the necessity of machining the bases or casings, Where the race plates attach.

A further object of thev invention is to mount the race plates in such manner as to insure, against breaking of the race lates when subjected to uneven pressure at iiferent oints of .their lengths, thus permitting of tlib use of hard stee In the drawings forming a portion of this specification and in which like numeralsof reference indicate similar parts in the several views, Figure 1 is a vertical sectiontaken longitudinally through 'a side bearing embodying the present invention. Fig. 2 is a vertical section taken transversely through the side bearing Fig. 3 is a top plan view of the structure shown in`Fig. l, a portion of the upper bearing casing being omitted.

Referring now to the drawings, and more particularly to Figs. 1 and 2 thereof, there 1s shown a side bearing similar in structure Patent N o. 7 59,304, granted to' me, and wherein there is em loyed a lower bearing member including a Base late 5 uponwhich is mounted a laterally sli able plate 6 which rests between the upwardly directed arms 7 at the sides of the late 5 and at each end thereofhthernhe 6 aving depending stems Specification of Lettera Patent.

Application led Hay 31, 1905. Serial No. 263,060.

.13 is sli Patented Doc. 1, 1908.

8 that enter transverse slots 9'inthe plate 5 `and are ared at their lower ends to prevent withdrawal and thus serve'to hold the plates 5 and 6 together, while permitting movement of the late 6 upon the plate 5 laterall Int e upper faceof the movable p ate 6 is a longitudinally extending arc-shaped slot 10, the side and end walls of which are beveled inwardly or cut-under as shown at 11, Said side and end walls from the lower edges of the bevels 11 tothe bottom of the recess, being disposed at an angle to the bevels as shown at 12.' In connection with the movable plate 6, there is employed an arc-,shaped race. plate 413p having a transversely curved groove 14 ground in its upper face and extending longitudinally thereof. The maximum Width of the 4race plate of the roove 10, sothat the race plate may enter t e groove to which it corresponds in ghtly less than the'width of the top curvature, and the 'race plate 13 is ta ered upwardly from its central lon itudina portion of maximum width, the ttom of the race plate being beveled as shown at 15 so that whenthe'racepiateis in the roove 10,

the beveled faces 15 Will-'be paralle with the faces 12 while the' faces l1 will conver e upwardly toward the corresponding si e and end faces 'of the'upwardly tapered portion of the race plate. Between the race platev and the face of the groove 10 is cast a seal 16 v of type metal which by reason of its expansion 1n its heated state, serves to tightly.

grip and hold the race plate, at thelsame time forming a seat which is yieldable to a degree that will prevent snapping of the race plate when subjected to uneven pressure or to sudden blows. Vitli this seal, it

Willbe readilyunderstood that thereis formed a seat for the race plate from which the latter cannot by any possible means be drawn, any fiow of the type metal underv the inliu ence of pressure upon the race plate being prevented b the gradually diminishing space; throug which the metal would have toflow in Yits upward course.

The upper bearing casing 20 is the 'same' in general structure as that described in the patent above referred to and has a groove or channel 21 similar in all respects to the groove or channel 10 and in which is dis- 'posed a race plate 22 identical with the Vrace plate 13 and held in place by `a type metal seal 23 the same in all respects as the seal 16.

In placing the race plate, it 1s suspended in the groove or channel by means of a magnet or a series of magnets, after the race plate has been tempered and ground on its grooved side, and after said plate is in proper position so that it will be horizontal when mounted upon a truck bolster, the seal is poured into place. The casting of the seal does not suiticiently heat the race plate to draw its temper but tov insure positively against any such tendency, the seal may be cooled immediately after it is in place, by means of water or in any other suitable manner,

The upper plate 20 of the Side bearings illustrated has the depending anges 40 and il between which are held balls 42 that bear against the race plates 13 and 22.

-What is claimed is In a side bearing for cars, a base plate, a second plate imposed on said base plate and formed with a groove having its opposite longitudinal sides beveled and inclined inwardly oneach side of their longitudinally` type metal interposed between the faces of said groove and the adjacent faces of said race plate.

In testimony whereof, I aiiix my signa-v ture, in presence of two witnesses.

JOHN E. NORVVOOD.

' Witnesses:

GEO. H. CHANDLEE, M. E. TUCKER. 

